Articles

Browse our published research articles

147 articles
91
Research Article

Synthesis of active methylene azo disperse dyes based on 4-Amino-3-Nitrobenzaldehyde as diazo component and their application on polyester and Nylon 6.6 fabric

SALISU A*, Bello K. A., Mohammed K. Yakubu

Active methylene azo disperse dyes were synthesized and characterized. A good percentage yield of each of the dyes were obtained in the range of 58-82 %. The dyes have well defined melting points in the range of 270 – 404 C. The visible absorption spectra of the dyes showed that the dyes absorbed maximally within the visible region of the electromagnetic spectrum. The results of halochromism o...

Jun, 2015 pp. 58-64
92
Research Article

Fuel properties of biodiesel from neem, cotton and jatropha binary and multi-blends with diese

Kaisan M. U.*, Anafi F. O., Umaru S., Kulla D. M., Nuszkowski J.

The physico-chemical properties of biodiesel are its specifications that define a set of quality standards. These properties include specific gravity, acid number, viscosity, cetane number, flashpoint, pour point, cloud point, cold filter flogging point, sulphated ash, carbon residue, sulphur content, copper strip corrosion and free fatty acid among others. This research presents the results of...

Jun, 2016 pp. 59-66
93
Research Article

Evaluation of the Effects of Weight Fraction on the Average Crystallite Size of ZnO Supported Bio-Waste Activated Carbon Composites

Onuoha David Chikaorama*, Egbe Evudiovo Apha Peter, Abdulrahman Asipita Salawu, Abdulkareem Ambali Saka

Metal nanoparticles are known to possess outstanding mechanical properties, relative to their bulk materials. However, due to large surface energy, nanoparticles tend to coalesce to each other, forming bulk particles and eventually deteriorate in quality. It is therefore, essential to immobilize nanoparticles on a support to help particles stay away from each other. This paper reports the effec...

Dec, 2020 pp. 60-67
94
Research Article

Electrical conduction and dielectric loss characteristics in natural ester dielectric fluid

ABDELMALIK A. A*

Alkyl ester derivatives of palm kernel oil have been prepared for use as bio-dielectrics in oil filled High Voltage (HV) electric equipment. Electrical conduction and loss characteristics of the ester derivatives were studied to understand the behaviour of the material under applied electric field. Frequency response analyzer was used to study electrical conduction within the fluids since diele...

Dec, 2014 pp. 60-67
95
Research Article

Heavy Metals Status of Soil Around Waste Dumpsites in Ughelli Metropolis, Delta State

Ojebah C. K.*, Uwague A., Edema O. G.

This study investigated the heavy metal status of soils around waste dumpsites in Ughell, metropolis, Delta State, Nigeria. Two different dumpsites were used for this study. For the metal analysis, soil samples were collected at 0-15cm depth. The soil samples were air dried for five days and sieved. 2.0g of the soil sample was digested with HNO3/HClO4 mixture and analysed for heavy metals (Fe, ...

Dec, 2016 pp. 61-64
96
Research Article

Evaluation of Compacted Black Cotton Soil – Sawdust Ash Mixtures as Road Construction Material

Yohanna P.*, Mannir I., Osinubi K. J.

This study was aimed at the evaluation of the stabilization potential of sawdust ash (SDA) on black cotton soil. Soil samples were treated with up to 10 % SDA content by dry weight of soil compacted with reduced British Standard light (RBSL) energy. Index properties of the natural soil showed that the soil belongs to A-7-5 (36) in American Association of State Highway Transportation Officials (AAS...

Dec, 2016 pp. 65-72
97
Research Article

Household electronic wastes (E-wastes) generation and management in Nigeria

IBRAHIM F. B*

The rapid turnover in technology in developed and developing countries like Nigeria, has created a new environmental problem in electronic waste (e-waste) management due to high obsolesce rate of consumption. Households are one of the major consumers of electronic equipment and consequently the major sources of electronic wastes (e-waste). In this study, an assessment of the sources, types, lifesp...

Jun, 2015 pp. 65 – 72
98
Research Article

Effect of Woven E - Glass Fibre Loading on the Mechanical, Morphological and Physical Properties of Reinforced Polypropylene Composite for Automobile Application

E. Danladi*, Mamza Paul Andrew, Yaro S. A, ISA M. T, Sadiku E. R, Ray S. S

This research investigates the impact of glass fiber content on the mechanical, morphological, physical, and dynamic mechanical properties of polypropylene (PP) composites. The selection of PP and glass fiber is driven by their widespread availability, favorable mechanical characteristics, and cost-effectiveness. The study involves the fabrication of glass fiber-reinforced PP composites using a Ca...

Jun, 2023 pp. 66-73
99
Research Article

Geological and chemical characterization of Amethyst mineralization in Dutsen Bakura hill, Kaduna State, Northcentral Nigeria

Solomon R. A.*, Ibrahim A. A., Magaji S. S.

Dutsen Bakura hill amethyst mineralization is located within a sheared granitic gneiss in the Pan African basement complex of northcentral Nigeria. The zone of mineralization is within a shear zone that trend NE-SW consistent with Pan-African structural trend. Mineralization consists of bands of milky quartz and amethyst, apparently formed from two stage sequence of silicification. Major, trace ...

Jun, 2016 pp. 67-73
100
Research Article

Green Synthesis and Characterisation of Magnetite Nanoparticles Using Factorial Design of Experiment

Olasupo Olayode Adesola*, Abdulkareem Ambali Saka, Kovo Abdulsalami Sani, Abubakre Oladiran Kamardeen

Magnetite nanoparticles have been produced by green synthesis method. Aqueous extract of Mangifera indica leaves was used as reducing agent for co-precipitation of magnetite from iron (II) and iron (III) salts 3 in 1:2 molar ratio. Optimisation of the process was carried out using 2 factorial design of experiments taking into consideration stirring time of reaction medium, temperature and volu...

Dec, 2020 pp. 68-80